/*
 * Copyright (c) 2006 Kungliga Tekniska Högskolan
 * (Royal Institute of Technology, Stockholm, Sweden).
 * All rights reserved.
 *
 * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "gssdigest.h"

/*
 * Allocate a scram context handle for the first provider that
 * is up and running.
 */
OM_uint32
_gss_scram_allocate_ctx(OM_uint32 *minor_status, const char *domain, scram_id_t *ctx)
{
    scram_id_t c;

    *ctx = NULL;

    c = calloc(1, sizeof(*c));
    if (c == NULL) {
	*minor_status = ENOMEM;
	return GSS_S_FAILURE;
    }

    *ctx = c;

    return GSS_S_COMPLETE;

}

/*
 *
 */

OM_uint32
_gss_scram_accept_sec_context
(OM_uint32 * minor_status,
 gss_ctx_id_t * context_handle,
 const gss_cred_id_t acceptor_cred_handle,
 const gss_buffer_t input_token_buffer,
 const gss_channel_bindings_t input_chan_bindings,
 gss_name_t * src_name,
 gss_OID * mech_type,
 gss_buffer_t output_token,
 OM_uint32 * ret_flags,
 OM_uint32 * time_rec,
 gss_cred_id_t * delegated_cred_handle
    )
{
    *minor_status = 0;

    if (context_handle == NULL)
	return GSS_S_FAILURE;
	
    if (src_name)
	*src_name = GSS_C_NO_NAME;
    if (mech_type)
	*mech_type = GSS_C_NO_OID;
    if (ret_flags)
	*ret_flags = 0;
    if (time_rec)
	*time_rec = 0;
    if (delegated_cred_handle)
	*delegated_cred_handle = GSS_C_NO_CREDENTIAL;

#if 0
    if (*context_handle == GSS_C_NO_CONTEXT) {
	OM_uint32 major_status;
	OM_uint32 retflags = 0;

	_gss_mg_log(10, "scram-asc-s1");

	major_status = _gss_scram_allocate_ctx(minor_status, NULL, &ctx);
	if (major_status)
	    return major_status;
	*context_handle = (gss_ctx_id_t)ctx;
	
	ctx->flags = retflags;

	return GSS_S_CONTINUE_NEEDED;
    } else {
	OM_uint32 maj_stat;
	size_t i;

	if (input_token_buffer == GSS_C_NO_BUFFER)
	    return GSS_S_FAILURE;

	ctx = (scram_id_t)*context_handle;

	data.data = input_token_buffer->value;
	data.length = input_token_buffer->length;

	ctx->client = strdup("lha");


	_gss_mg_log(10, "scram-asc-s2");

	if (src_name)
	    *src_name = (gss_name_t)strdup(ctx->client);

	if (mech_type)
	    *mech_type = GSS_SCRAM_MECHANISM;
	if (time_rec)
	    *time_rec = GSS_C_INDEFINITE;

	ctx->status |= STATUS_OPEN;

	if (ret_flags)
	    *ret_flags = ctx->flags;

	return GSS_S_FAILURE;
    }
#else
    return GSS_S_FAILURE;
#endif
}
